Sometimes, your internet connection might be intermittent or slow due to not selecting the highest network mode for your SIM. Switching to the highest network mode can help improve internet speed.
To switch network modes (2G/3G/4G) on Sony Xperia XA Ultra, follow these steps:
Step 1: Go to 'Settings'.

Go to 'Settings'
Step 2: Select 'Add'.

Select 'Add'
Step 3: Choose 'Mobile Network'.

Select 'Mobile Network'
Step 4: Choose 'Preferred Network Type' and network mode.

Select 'Preferred Network Type'

Select network mode
Wishing you all success.
